TL431, TL431A, TL431B
TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543J − AUGUST 2004 − REVISED DECEMBER 2005
electrical characteristics over recommended operating conditions, T
A
= 25°C (unless otherwise
noted)
PARAMETER
Vref
VI(dev)
DV
ref
DV
KA
Iref
II(dev)
Imin
Ioff
|zKA|
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
Ratio of change in reference voltage
to the change in cathode voltage
Reference current
Deviation of reference current
over full temperature range
(see Figure 1)
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance (see Figure 1)
TEST
CIRCUIT
2
2
TEST CONDITIONS
MIN
VKA = Vref,
IKA = 10 mA
2470
TL431AQ
TL432AQ
TYP
2495
14
−1.4
−1
2
0.8
MAX
2520
34
−2.7
−2
4
2.5
mV
mV
UNIT
VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C
IKA = 10 mA
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
3
3
3
mV
V
µA
µA
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞,
TA = −40°C to 125°C
VKA = Vref
VKA = 36 V,
Vref = 0
IKA = 1 mA to 100 mA, VKA = Vref,
f
≤
1 kHz
2
4
2
0.4
0.1
0.2
0.7
0.5
0.5
mA
µA
Ω
electrical characteristics over recommended operating conditions, T
A
= 25°C (unless otherwise
noted)
PARAMETER
Vref
VI(dev)
DV
ref
DV
KA
Iref
II(dev)
Imin
Ioff
|zKA|
Reference voltage
Deviation of reference voltage
over full temperature range
(see Figure 1)
Ratio of change in reference voltage
to the change in cathode voltage
Reference current
Deviation of reference current
over full temperature range
(see Figure 1)
Minimum cathode current
for regulation
Off-state cathode current
Dynamic impedance (see Figure 1)
TEST
CIRCUIT
2
2
TEST CONDITIONS
MIN
VKA = Vref,
IKA = 10 mA
2483
TL431BC
TL432BC
TYP
2495
6
−1.4
−1
2
0.8
MAX
2507
16
−2.7
−2
4
1.2
mV
mV
UNIT
VKA = Vref, IKA = 10 mA,
TA = 0°C to 70°C
IKA = 10 mA
∆V
KA = 10 V − Vref
∆V
KA = 36 V − 10 V
3
3
3
mV
V
µA
µA
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞
IKA = 10 mA, R1 = 10 kΩ, R2 =
∞,
TA = 0°C to 70°C
VKA = Vref
VKA = 36 V,
Vref = 0
IKA = 1 mA to 100 mA, VKA = Vref,
f
≤
1 kHz
2
4
1
0.4
0.1
0.2
0.6
0.5
0.5
mA
µA
Ω
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
15